JP2014035835A - Connector for card - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance reliability by allowing a contact part at the tip of a contact member to be disposed at a position in close proximity to the rear end edge of a housing while keeping a sufficiently long spring length of a connection terminal, and facilitating insertion and ejection of a card with a terminal member disposed on the rear end side.SOLUTION: The connector for card includes a housing for housing a card with a terminal member, and connection terminals attached to the housing and coming into contact with the terminal member of the card. At least one connection terminal is disposed along the rear end edge of the housing, and includes a proximal part which is buried at least partially in the bottom wall of the housing, and a contact member forming a hoop together with the proximal part. The contact member includes a pair of springs connected with the proximal part, a joint for coupling the pair of springs, and a contact part connected with the tip of the joint and coming into contact with the terminal member of the card.

Description

  The present invention relates to a card connector.

  Conventionally, in electronic devices such as personal computers, mobile phones, PDAs (Personal Digital Assistants), digital cameras, video cameras, music players, game consoles, vehicle navigation devices, SIM (Subscriber Identity Module) cards, MMC (R) (Multi Media Card), SD (R) (Secure Digital) card, miniSD (R) card, xD Picture Card (R) (xD-Picture card), Memory Stick (R), Memory Stick Duo (R), SmartMedia In order to use various memory cards such as (R), Trans-Flash (R) memory card, micro SD (R) card, etc., a card connector is provided. (For example, refer to Patent Document 1).

  FIG. 12 shows a conventional card connector.

  In the figure, reference numeral 811 denotes a card connector frame made of a metal material, which includes a bottom plate portion 811b and accommodates a memory card (not shown). The memory card is, for example, a SIM card, and an electrode pad (not shown) is exposed on the lower surface.

  A plurality of first terminal holding portions 811c and second terminal holding portions 811d are formed on the bottom plate portion 811b, and each of the first terminal holding portions 811c and the second terminal holding portions 811d is made of metal. The first terminal 851 and the second terminal 861 are accommodated and held. In the example shown in the figure, a plurality of first terminals 851 and second terminals 861 are arranged in two rows so as to match the arrangement of the electrodes of the SIM card.

  The first terminal 851 has a rectangular frame portion 851a whose center is opened, and a cantilever-shaped contact member 851b that is connected to the inner edge of the rectangular short side of the frame portion 851a and extends into the opening. And a tail portion 851d protruding outward from the outer edge of the rectangular short side of the frame portion 851a. The second terminal 861 has a rectangular frame portion 861a having an opening at the center, and a cantilever-shaped contact extending at the base end to the inner edge of the rectangular short side of the frame portion 861a and extending into the opening. A member 861b and a tail portion 861d projecting outward from the outer edge of the rectangular short side of the frame portion 861a are provided.

  The first terminal 851 and the second terminal 861 are formed by bonding the frame portions 851a and 861a to which the insulating film is applied to the first terminal holding portion 811c and the second terminal holding portion 811d with an insulating adhesive. The base plate portion 811b is fixed. The first terminal 851 and the second terminal 861 are electrically connected to the conductive traces of the circuit board by soldering tail portions 851d and 861d to connection pads on the surface of the circuit board (not shown). The frame 811 is fixed to the surface of the circuit board by soldering tail portions 851d and 861d to connection pads.

  When the memory card is mounted on the frame 811, each of the electrode pads exposed on the lower surface of the memory card comes into contact with the corresponding contact members 851 b and 861 b of the first terminal 851 and the second terminal 861 to conduct. In this case, the cantilever-shaped contact members 851b and 861b are elastically deformed and are pressed against the electrode pad of the memory card by its springiness, so that the contact state with the electrode pad can be reliably maintained.

JP 2009-295351 A

  However, in the conventional card connector, it is difficult to mount and remove a card such as a memory card, and the usability is deteriorated. Therefore, a push / push type card guide mechanism that operates to push the card in and out of the card so that the user can easily insert and remove the card with one hand. The card connector is widely used.

  By the way, in recent years, with the miniaturization of electronic devices, the cards used in the electronic devices have also been miniaturized. And if a card is reduced in size, the area ratio of the electrode pad with respect to the surface of a card | curd will become large, and a margin will be less in the arrangement | sequence aspect of an electrode pad. Therefore, for example, in the case of a card in which electrode pads are arranged in two rows like a SIM card, the electrode pads in the front row and the rear row are arranged in positions close to the front end and the rear end of the card, respectively. Then, in the card connector having the push / push type card guiding mechanism, the card is inserted into the card connector from the insertion slot, so that the electrode pads arranged close to the rear end of the card It is necessary to arrange the front end portion of the contact member of the terminal corresponding to 1 at a position close to the insertion port at the rear end of the card connector.

  Therefore, when the terminal is attached so that the cantilever-shaped contact member that exhibits springiness extends obliquely upward from the back of the card connector toward the insertion port so that the tip portion is as close as possible to the insertion port, There is a risk that the contact member of the terminal will buckle due to contact with the card inserted from the insertion port of the card connector toward the back. Of course, if the cantilever-shaped contact member is attached so that the card member extends from the insertion slot of the card connector to the back and obliquely upward, there is no risk of the contact member buckling. If the contact member is shortened so as to be close to the insertion slot, the spring length is shortened, and the contact between the electrode pad of the card and the tip portion becomes uncertain.

  The present invention solves the problems of the conventional card connector and arranges the contact portion at the front end of the contact member at a position close to the rear end edge of the housing while keeping the spring length of the connection terminal sufficiently long. An object of the present invention is to provide a highly reliable card connector that can easily insert and eject a card having a terminal member disposed on the rear end side.

  For this purpose, the card connector of the present invention has a housing for housing a card having a terminal member, and a connection terminal attached to the housing and in contact with the terminal member of the card, and at least one of the connection terminals. And a base portion disposed along the rear end edge of the housing, at least a part of which is embedded in the bottom wall portion of the housing, and a contact member that forms a hoop together with the base portion. , A pair of spring portions connected to the base portion, a merging portion that couples the pair of spring portions, and a contact portion that is connected to the tip of the merging portion and contacts the terminal member of the card.

  In another card connector of the present invention, the contact member further has an M shape or a mountain shape in plan view.

  In still another card connector of the present invention, the joining portion further extends obliquely upward toward the front end edge of the housing, and the contact portion is formed in the hoop in a plan view. Located in the opening.

  In still another card connector of the present invention, each spring portion further includes a first portion extending from the base portion toward the rear end edge of the housing, and a bent portion having one end connected to the first portion. And a third part connected to the other end of the second part and extending toward the front edge of the housing, and a tip of the third part is coupled at the junction.

  In still another card connector of the present invention, each spring portion has a constant width and thickness over its entire length, and functions as a cantilever-like plate spring.

  In still another card connector of the present invention, the housing further includes a terminal holding recess disposed along the rear end edge and penetrating through the bottom wall portion, and extends along the rear end edge of the housing. The connection terminals arranged in the above are held in the terminal holding recesses so that the contact member does not come into contact with the bottom wall portion.

  According to the present invention, the card connector can arrange the contact portion at the front end of the contact member at a position close to the rear end edge of the housing while keeping the spring length of the connection terminal sufficiently long. The card having the terminal member disposed therein can be easily inserted and ejected, and the reliability can be increased.

It is an exploded view of the connector for cards in the 1st embodiment of the present invention. It is a perspective view which shows the connector for cards in the 1st Embodiment of this invention. It is a top view which shows the state which removed the shell of the connector for cards in the 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the card | curd inserted in the connector for cards in the 1st Embodiment of this invention, Comprising: (a) is a top view, (b) is the perspective view seen from diagonally upward, (c) is diagonally downward It is the perspective view seen from. BRIEF DESCRIPTION OF THE DRAWINGS It is the 1st figure explaining the terminal in the 1st Embodiment of this invention, Comprising: (a) is the figure seen from diagonally back upper direction, (b) is the figure seen from diagonally forward upper direction, (c) is It is the figure seen from diagonally forward lower. It is the 2nd figure explaining the terminal in a 1st embodiment of the present invention, (a) is a top view, (b) is a side view in the state where a card is not loaded (ten), (c) FIG. 3 is a side view of a state in which a card is loaded. BRIEF DESCRIPTION OF THE DRAWINGS It is the 1st figure explaining the contact member of the terminal in the 1st Embodiment of this invention, Comprising: (a) is the figure seen from diagonally back upper direction, (b) is the figure seen from diagonally forward upper, c) is a view seen from diagonally forward and lower. It is the 2nd figure explaining the contact member of the terminal in a 1st embodiment of the present invention, (a) is a top view, (b) is a side view in the state where a card is not loaded, (c). FIG. 3 is a side view of a state in which a card is loaded. It is a sectional side view of the state in which the card | curd of the card | curd connector in the 1st Embodiment of this invention was loaded. It is a 1st figure explaining the terminal in the 2nd Embodiment of this invention, Comprising: (a) is the figure seen from diagonally back upper direction, (b) is the figure seen from diagonally forward upper direction, (c) is It is the figure seen from diagonally forward lower. It is the 2nd figure explaining the terminal in a 2nd embodiment of the present invention, (a) is a top view, (b) is a side view in the state where a card is not loaded, and (c) is a card. It is a side view of the state loaded. It is a figure which shows the conventional card connector.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1 is an exploded view of a card connector in the first embodiment of the present invention, FIG. 2 is a perspective view showing the card connector in the first embodiment of the present invention, and FIG. 3 is a first view of the present invention. FIG. 4 is a perspective view of a card inserted into the card connector according to the first embodiment of the present invention. FIG. In FIG. 4, (a) is a top view, (b) is a perspective view seen from diagonally above, and (c) is a perspective view seen from diagonally below.

  In the figure, reference numeral 1 denotes a card connector in the present embodiment, which is attached to an electronic device (not shown). Then, a card 101 is inserted into the card connector 1, and the card 101 is attached to the electronic device via the card connector 1. The electronic device is, for example, a personal computer, a mobile phone, a PDA, a digital camera, a video camera, a music player, a game machine, a vehicle navigation device, or the like, but may be any type of device.

  The card 101 is, for example, a SIM card, MMC (R), SD (R) card, miniSD (R) card, xD picture card (R), memory stick (R), memory stick Duo (R), smart media ( R), a Trans-Flash (R) memory card, a micro SD (R) card, etc., and any type of card may be used. In the present embodiment, a micro SIM (micro SIM) card is used. It will be explained as being.

  In the present embodiment, as shown in FIG. 4, the card 101 has a generally rectangular plate shape as a whole, and a terminal member is provided on the lower surface 111a near the front end 111f. A plurality of contact pads 151 as certain electrode pads are arranged along the front end 111f. Further, a plurality of contact pads 151 are also arranged along the rear end 111r on the lower surface 111a near the rear end 111r. That is, the contact pads 151 are arranged in two rows extending in the width direction of the card 101. Note that the contact pads 151 are not provided on the upper surface 111b. Furthermore, an obliquely cutout 111c is formed at one of the corners connecting the left and right ends of the front end 111f and the side edge 112, specifically, the front left corner of the upper surface 111b.

  In the present embodiment, expressions indicating directions such as upper, lower, left, right, front, rear, etc. used for explaining the configuration and operation of each part of the card connector 1 and the card 101 are absolute. The card connector 1, the card 101, or their parts are suitable when the card connector 1, the card 101, or their parts are in the posture shown in the figure. Should change and be interpreted according to the change in posture.

  Here, the card connector 1 is integrally formed by punching and bending a housing 11 integrally formed of an insulating material such as synthetic resin and a plate material made of a conductive material such as metal. And a shell 71 serving as a cover member attached to the upper side of the housing 11. The shell 71 covers the upper part of the housing 11 and at least a part of the card 101 inserted into the housing 11. The card connector 1 has a generally flat rectangular parallelepiped shape, is attached to the electronic device, and the card 101 is inserted into the housing 11 from the insertion port 18 at the rear (upper left in FIG. 2). Is done. Specifically, the card 101 is inserted into a space formed between the housing 11 and the shell 71.

  The shell 71 may be omitted, and the housing 11 may be formed in a cylindrical shape, or a member partially formed of metal and partially formed of mold resin may be used as a cover member. An example using the shell 71 will be described.

  As shown in the drawing, the housing 11 extends along the bottom wall portion 11b, which is a substantially rectangular flat plate-like member, and the edge in the insertion direction of the card 101 in the housing 11, that is, the front end edge 11f. It has a back wall portion 11a erected from the bottom wall portion 11b and a side wall portion 11e extending in the front-rear direction along the left and right side edges of the bottom wall portion 11b.

  Here, the bottom wall portion 11b has a rear terminal holding recess 11c as a terminal holding recess for holding a terminal 51 as a connection terminal disposed on the rear side of the connection terminals, and a front side of the connection terminals. And a front terminal holding recess 11d as a terminal holding recess for holding the terminal 51 as the arranged connection terminal. The rear terminal holding recess 11c is an opening penetrating the bottom wall portion 11b in the thickness direction, and the rear edge of the card 101 in the insertion direction of the card 101 in the housing 11, that is, the width of the housing 11 along the rear edge 11r. They are arranged side by side so as to form a row extending in the direction. Then, one terminal 51 is housed and held in each rear terminal holding recess 11c. The front terminal holding recess 11d is an opening penetrating the bottom wall portion 11b in the plate thickness direction, and is a row extending in the width direction of the housing 11 between the front end edge 11f and the rear end edge 11r of the housing 11. Are arranged side by side. Then, one terminal 51 is housed and held in each front terminal holding recess 11d.

  At least a part of the base 52 of the terminal 51 is embedded in the bottom wall 11b, and the other part is exposed in the rear terminal holding recess 11c and the front terminal holding recess 11d. Specifically, the terminal 51 is formed by so-called overmolding, that is, the housing 11 is formed by filling an insulating material into a cavity of a mold in which the terminal 51 is set in advance. Is embedded and held in the bottom wall portion 11b by being covered with an insulating material constituting the bottom wall portion 11b.

  The terminal 51 includes a contact member 54 whose base end is coupled to the base portion 52 and is elastically deformable, and a solder tail portion 53 protruding from the base portion 52. A central opening 55a as an opening is formed between the base 52 and the contact member 54. The front end of the contact member 54 extends obliquely upward toward the front edge 11f, and at least the upper surface of the front end is higher than the upper surface of the bottom wall portion 11b when the card 101 is not inserted into the card insertion space. Located above. As shown in FIG. 3, the contact member 54 and the solder tail portion 53 are located in the rear terminal holding recess 11 c and the front terminal holding recess 11 d as viewed from above. The solder tail portion 53 functions as a solder connection portion, and is electrically connected to a signal line, a contact pad, a terminal, or the like formed on a wiring board or the like in the electronic device, that is, a mating terminal member by soldering or the like. Connected.

  The terminal 51 is disposed so that at least a part of the contact member 54 contacts each of the contact pads 151 of the card 101 held in the card connector 1. Therefore, the number and arrangement form of the terminals 51 are appropriately changed so as to match the number and arrangement form of the contact pads 151 of the card 101. In the example shown in the figure, the terminals 51 are arranged in a rectangular lattice shape so as to form two rows by three and viewed from the top.

  A card guide mechanism accommodating portion 11h and an urging member accommodating portion 11g are formed inside the side wall portion 11e on one side (left side in FIG. 3) of the housing 11. A slide member 23 of a card guide mechanism for guiding the card 101 inserted into the card connector 1 is attached to the card guide mechanism accommodating portion 11h so as to be slidable in the front-rear direction. The slide member 23 includes a slide cam portion 21.

  The slide cam portion 21 is a member that functions as a slide cam in a cam mechanism of a heart-shaped cam for performing a push / push type operation, and a cam groove 22 is formed on the upper surface thereof. The cam groove 22 engages with one end of an elongated pin member 81 as a cam member whose other end is locked to the pin locking portion 11 i of the housing 11.

  Further, a biasing member 82 as a coil spring that exhibits a biasing force in a compressed state is accommodated in the biasing member accommodating portion 11g. The rear end surface of the slide cam portion 21 functions as a biasing force receiving portion that receives the biasing force of the biasing member 82. As a result, the slide member 23 is urged by the urging member 82 in the direction opposite to the insertion direction of the card 101, that is, the ejection direction of the card 101.

  The slide member 23 includes a card holding portion 23 a for holding the card 101. The card holding portion 23a is connected to the front end of the side edge holding portion 23b and extends in the width direction of the housing 11, and is connected to the front end of the side edge holding portion 23b. Part 23c. The slide member 23 holds the card 101 by the side edge holding portion 23b and the front end holding portion 23c of the card holding portion 23a and moves in the front-rear direction together with the card 101.

  The card connector 1 having such a card guiding mechanism is an operation for pushing the card 101 when the card 101 is inserted into the card connector 1 or when the card 101 is taken out from the card connector 1. Is a so-called push-in push-out type or push / push type. Such an operation is similar to the alternate operation (position holding type, push-on / push-off type) in the field of pushbutton switches. The pin member 81 and the cam groove 22 cooperate to cause the slide member 23 that moves together with the card 101 to perform a push / push operation. As a result, when the card 101 moves in the insertion direction and reaches the end point by a push operation to push the card 101 in the insertion direction, the card guide mechanism terminates the card 101 by the biasing force of the biasing member 82. It can be discharged from the point in the direction opposite to the insertion direction. Further, at the locked position, the slide member 23 is stopped, whereby the card 101 is held inside the card connector 1.

  The pin member 81 is held by being urged downward from above by a pin pressing member 75 of the shell 71. The pin pressing member 75 is a plate-like member having a spring property formed by bending a part of the shell 71 so as to be pressed in the direction of the bottom wall portion 11b of the housing 11, and the pin member 81 is It is positioned between the pin pressing member 75 and the slide member 23 or the housing 11 and is held so as not to be detached from the slide member 23 or the housing 11.

  The shell 71 includes a substantially rectangular top plate portion 72 and a plurality of side plate portions 74 standing from a plurality of locations on the side edge of the top plate portion 72. A plurality of latching openings 73 are formed in the side plate portion 74. As shown in FIG. 2, when the shell 71 is attached to the upper side of the housing 11, the side plate portion 74 is formed on the outer surface of the side wall portion 11e of the housing 11. The latching opening 73 is latched on the latching protrusion 13, and the shell 71 is fixed to the housing 11.

  In addition, the erroneous insertion prevention part provided with the slope inclined with respect to the said side wall part 11e and the back wall part 11a in the connection part of the other side (right side in FIG. 3) of the housing 11 and the back wall part 11a. 11j is formed. When the card 101 is inserted into the card connector 1 in a normal posture, that is, with the lower surface 111a facing the bottom wall portion 11b and the front end 111f facing the back wall portion 11a, the card 101 is cut obliquely. Since the cutout portion 111c faces the slope of the erroneous insertion prevention portion 11j, the inserted card 101 can reach the terminal point. However, when the card 101 is inserted into the card connector 1 in a posture other than the normal posture, that is, in a non-normal posture, the corner portion of the card 101 other than the notch portion 111c abuts against the erroneous insertion prevention portion 11j. Therefore, the inserted card 101 cannot reach the end point. That is, erroneous insertion is prevented.

  Next, the terminal 51 will be described in detail.

  FIG. 5 is a first diagram illustrating a terminal according to the first embodiment of the present invention, FIG. 6 is a second diagram illustrating a terminal according to the first embodiment of the present invention, and FIG. FIG. 8 is a second diagram illustrating a terminal contact member according to the first embodiment of the present invention, and FIG. 9 is a diagram illustrating the present invention. It is a sectional side view of the state in which the card | curd of the card | curd connector in 1st Embodiment was loaded. 5 and 7, (a) is a diagram viewed from diagonally upward and rearward, (b) is a diagram viewed from diagonally forward and upward, and (c) is a diagram viewed from diagonally forward and downward, and FIGS. 4A is a top view, FIG. 3B is a side view when a card is not loaded, and FIG. 4C is a side view when a card is loaded.

  The terminal 51 is integrally formed into a shape as shown in FIGS. 5 and 6 by punching or bending a plate made of a conductive material such as a metal with a machine tool such as a press device. It is formed. In this case, the punching and bending may be performed simultaneously or sequentially. The terminal 51 may be formed by any kind of processing method, for example, by any kind of processing method such as laser processing or etching.

  7 and 8, only the contact member 54 of the terminal 51 is shown and the other parts of the terminal 51 are not shown for easy understanding.

  As shown in FIG. 6A, the terminal 51 has a symmetrical shape with respect to a center axis (not shown) extending in the front-rear direction (left and right in FIG. 6A) in plan view. The base 52 of the terminal 51 includes a pair of connecting portions 52a extending rearward from the left and right ends of the rear end edge (the right end edge in FIG. 6A), and is substantially U-shaped in plan view. It has a U-shape. Further, the contact member 54 of the terminal 51 forms a hoop together with the base 52 in a plan view, and a central opening 55a is formed in the hoop. That is, the contact member 54 has a hoop shape surrounding the central opening 55a.

  More specifically, the contact member 54 has a substantially M shape or a mountain shape, and is connected to the connection portion 52 a of the base portion 52. More specifically, the contact member 54 includes a pair of left and right arm portions 54c each having a substantially U-shaped or J-shaped shape in plan view, and a joining portion 54b that joins the left and right arm portions 54c together. And a free end of the merging portion 54b, that is, a contact portion 54a connected to the tip. Each arm portion 54c includes a root portion 54c1 which is a portion connected to the connection portion 52a of the base portion 52, and an upper arm portion 54c2 as a first portion extending linearly from the root portion 54c1 to the rear. One end is connected to the rear end of the upper arm portion 54c2, and is connected to the bent portion 54c3 as a second portion that is bent so as to be directed from the rear to the front, and is connected to the other end of the bent portion 54c3. And a forearm portion 54c4 serving as a third portion extending linearly. The front ends of the forearm portions 54c4 in the left and right arm portions 54c merge at the merge portion 54b to be integrated.

  Further, the forearm portion 54c4 and the junction portion 54b have their tips extending obliquely upward toward the front (left side in FIG. 6A), and at least the upper surface of the contact portion 54a is located inside the card connector 1. When the card 101 is not inserted, the card 101 is positioned above the upper surface of the bottom wall portion 11b. In addition, the contact part 54a is provided with the side surface shape curved so that it may protrude upwards, and the front-end | tip has faced diagonally downward.

  The terminal 51 in the present embodiment further includes a frame member 56 that surrounds the periphery of the contact member 54. The frame member 56 has a substantially U-shape or U-shape when seen in a plan view, and is connected to the connection portion 52 a of the base portion 52. The external shape of the base portion 52 and the frame member 56 connected to each other is rectangular in plan view. A peripheral opening 55 b as an opening is formed between the frame member 56 and the contact member 54. A central opening 55a as an opening is formed between the base 52 and the contact member 54. When the central opening 55a and the peripheral opening 55b are described in an integrated manner, they will be described as the opening 55.

  Also, a solder tail portion 53 projects from the left and right center of the front end edge of the base portion 52 (left end edge in FIG. 6A). The solder tail portion 53 is connected to the base portion 52 through a bent portion, and is positioned below the base portion 52 as shown in FIG. Accordingly, even when a part of the base 52 is embedded in the bottom wall portion 11b of the housing 11, at least the lower surface of the solder tail portion 53 can be positioned below the lower surface of the bottom wall portion 11b. The portion 53 can be connected to a mating terminal member formed on a wiring board or the like facing the lower surface of the bottom wall portion 11b.

  As described above, the terminal 51 is embedded and held in the bottom wall portion 11b by covering at least a part of the base portion 52 with the insulating material constituting the bottom wall portion 11b. In the example shown in FIG. 3, the left and right side portions including the connection portion 52 a of the base portion 52 and most of the frame member 56 are embedded in the bottom wall portion 11 b, and the central portion of the base portion 52 and the solder tail portion 53 are embedded. And the entire contact member 54 are not embedded in the bottom wall portion 11b and are exposed in the rear terminal holding recess 11c and the front terminal holding recess 11d. Thus, since the peripheral part is embedded in the bottom wall part 11b over a wide range, the terminal 51 is stably held.

  On the other hand, since all of the contact members 54 are exposed in the rear terminal holding recess 11c and the front terminal holding recess 11d and are located in the opening 55, other than the bottom wall portion 11b, the frame member 56, etc. It can be elastically deformed in the vertical direction without being constrained by the member and without interference. And at least the upper surface of the contact portion 54a of the contact member 54 is located above the upper surface of the bottom wall portion 11b when the card 101 is not inserted into the card insertion space.

  Each arm portion 54c of the contact member 54 has a base portion 54c1 connected to the connection portion 52a of the base portion 52, and the upper arm portion 54c2, the bent portion 54c3, and the forearm portion 54c4 are elastically deformed, and the front end of the forearm portion 54c4. The merging portion 54b in the above functions as a cantilever-shaped spring portion that is elastically displaced in the vertical direction. Then, the upper arm portion 54c2 and the forearm portion 54c4 are connected via the bent portion 54c3, and have a substantially U-shaped or J-shaped shape in plan view as described above. In comparison, the length of the portion that functions as a cantilever-shaped spring portion, that is, the spring length is longer. That is, as shown in FIGS. 6A and 8A, the contact member 54 is longer than the length of the front and rear (left and right in FIGS. 6A and 8A) from the root portion 54c1 to the bent portion 54c3. The length from the root portion 54c1 to the merging portion 54b along the central axis is longer. Thus, since the spring length of the contact member 54 is sufficiently long, the amount of elastic displacement in the vertical direction of the contact portion 54a located at the tip of the contact member 54 becomes large. Therefore, as shown in FIG. 9, the contact portion 54a can follow the displacement in the vertical direction of the contact pad 151 of the card 101 inserted into the card connector 1 over a wide range. Contact with the contact pad 151 can be reliably maintained.

  Moreover, since the arm part 54c which functions as a cantilever-like spring part is divided into right and left, the width | variety of each arm part 54c can be narrowed. Therefore, the flexibility of the spring portion is increased, the contact portion 54a can be flexibly displaced in the vertical direction, and the contact pad 151 can be flexibly followed by a large displacement in the vertical direction. Can be maintained more reliably.

  Further, in each arm portion 54c, the width and thickness of the upper arm portion 54c2, the bent portion 54c3, and the forearm portion 54c4 are substantially constant over the entire length. Therefore, it deforms uniformly over the entire length from the root portion 54c1 to the merging portion 54b and functions as a spring portion. That is, there is no portion that does not function as a spring portion, and each portion is deformed little by little, and there is no portion that is plastically deformed due to a larger deformation amount than the other portions. This can be better understood by comparing the deformed state of the arm 54c shown in FIGS. 6 (c) and 8 (c) with the state shown in FIGS. 6 (b) and 8 (b). it can. 6 (c) and 8 (c), since the position of the bent portion 54c3 is higher than that in FIGS. 6 (b) and 8 (b), from the root portion 54c1 including the upper arm portion 54c2. It turns out that it deform | transforms uniformly over the full length to the confluence | merging part 54b. In this way, since it uniformly deforms over the entire length from the root portion 54c1 to the merging portion 54b and functions as a spring portion, the amount of elastic displacement in the vertical direction of the contact portion 54a increases, and the contact pad 151 and It is possible to more reliably maintain the contact.

  Furthermore, since the arm portion 54c that functions as two cantilever-like leaf springs is integrated in the junction portion 54b, the spring force acting on the contact portion 54a is twice the spring force exerted by each arm portion 54c. It is getting bigger. Therefore, the contact portion 54a is pressed against the contact pad 151 by a large spring force, and the contact pressure is high, so that the contact with the contact pad 151 can be more reliably maintained.

  Further, as described above, since the spring length is longer than the longitudinal length of the entire contact member 54, the longitudinal length of the entire contact member 54 can be shortened, and as a result, from the rear end of the terminal 51 to the contact portion 54a. Can be shortened. Therefore, if the rear terminal holding recess 11c is formed so as to be close to the rear end edge 11r of the housing 11, the distance from the rear end edge 11r to the contact portion 54a can be shortened as shown in FIG. Even when the distance from the rear end 111r of the card 101 to the contact pad 151 near the rear end 111r is short, when the card 101 is inserted into the card connector 1, the rear end 111r of the card 101 is moved backward. It is not necessary to insert larger than the end edge 11r.

  Further, at least the contact portion 54a of the contact member 54 is located in the central opening 55a in a plan view, and the base portion 52 and the bottom wall portion 11b do not exist below the contact portion 54a. Therefore, the contact state of the inserted card 101 with the contact pad 151 can be reliably maintained.

  Next, the operation of the card connector 1 having the above configuration will be described. First, the operation when the card 101 is inserted will be described.

  First, the user inserts the card 101 into the card insertion space formed between the housing 11 and the shell 71 from the insertion port 18 behind the card connector 1 with fingers or the like. The card 101 is inserted such that the front end 111f faces the front end edge 11f of the housing 11, the lower surface 111a faces the bottom wall portion 11b, and the upper surface 111b faces the top plate portion 72 of the shell 71. The As a result, the side edge 112 of the card 101 where the notch 111c is not formed advances along the card guide mechanism accommodating portion 11h.

  Subsequently, when the user pushes the card 101 and pushes it further, the side edge holding portion 23b and the front end holding portion 23c of the slide member 23 hold the side edge 112 and the front end 111f of the card 101. , Is held by the slide member 23, and moves toward the back wall portion 11 a together with the slide member 23. At this time, the pressing force exerted by the user's fingers and the like is transmitted from the front end 111 f of the card 101 to the slide member 23 via the front end holding portion 23 c. Since the slide member 23 compresses the urging member 82 made of a coil spring, the slide member 23 and the card 101 receive the repulsive force of the urging member 82, and the repulsive force is exerted by the user's fingers and the like. Since it is smaller than the pressing force to move, it moves against the repulsive force. In this case, the slide member 23 slides along the card guide mechanism accommodating portion 11 h, and the card 101 advances together with the slide member 23. Then, the slide member 23 and the card 101 reach the overstroke position, which is the most advanced position, and enter an overstroke state.

  Subsequently, when the user stops the operation of pushing the card 101 and releases the pressing force against the card 101, the repelling force of the urging member 82 causes the slide member 23 and the card 101 to move away from the back wall portion 11a. That is, it is moved toward the rear. Then, the slide member 23 and the card 101 stop at a lock position where the card 101 is held in the card connector 1 while being locked. This is because the free end of the pin member 81 engaged with the cam groove 22 formed on the upper surface of the slide cam portion 21 is hooked on a part of the cam groove 22 to stop the movement of the slide member 23. This is because the slide member 23 is stopped at the locked position.

  And the card | curd 101 will be in the state which can transmit / receive data between the calculating means etc. of the electronic device by which the connector 1 for cards was mounted by being hold | maintained at a locked position. When the card 101 is held in the locked position, the state shown in FIG. 9 is obtained, and the contact portion 54a of the terminal 51 of the card connector 1 contacts each of the contact pads 151 of the card 101. And is conducting.

  By the way, when the user pushes the card 101, the rear end 111r of the card 101 is usually pushed by a finger or the like. If the bottom wall 11b of the housing 11 is formed to be long in the front-rear direction, and the position of the rear edge 11r is behind the position of the rear end 111r of the card 101 held in the locked position, the user When the card 101 is pushed and advanced to the overstroke position ahead of the lock position, the finger or the like comes into contact with the rear end edge 11r of the housing 11, and the pushing operation becomes difficult. That is, the operability is degraded.

  However, in the card connector 1 according to the present embodiment, as described above, the distance from the rear edge 11r to the contact portion 54a of the terminal 51 in the rear terminal holding recess 11c can be shortened. Even when the distance from the rear end 111r to the contact pad 151 near the rear end 111r is short, when the card 101 is advanced to the overstroke position, the rear end 111r of the card 101 is moved from the rear end edge 11r. There is no need to insert a large part forward. Therefore, the operability is not lowered.

  Next, an operation for ejecting the card 101 from the card connector 1 will be described.

  First, when the user pushes and pushes the card 101 with fingers or the like, the slide member 23 and the card 101 are moved from the lock position toward the back wall portion 11a. When the user pushes the card 101 and pushes it further, the slide member 23 and the card 101 reach the overstroke position, which is the most advanced position, and enter the overstroke state.

  Subsequently, when the user stops pushing the card 101 and releases the pushing force against the card 101, the urging force of the urging member 82 causes the slide member 23 and the card 101 positioned at the overstroke position to It is moved in a direction away from the back wall 11a and moved in the direction opposite to the insertion direction. Then, the slide member 23 and the card 101 further move backward through the lock position, and the card 101 is ejected from the insertion slot 18.

  In the present embodiment, the terminal 51 is stored in the front terminal holding recess 11d as in the rear terminal holding recess 11c. However, the terminal 51 is stored in the front terminal holding recess 11d. The terminal may be different from the terminal 51 in configuration. For example, the contact member of the terminal accommodated in the front terminal holding recess 11d does not need to have a substantially M-shaped or mountain-shaped shape like the contact member 54 of the terminal 51, and is described in the background section. It may be a simple cantilever shape extending linearly as described above. In the first place, since the position of the front terminal holding recess 11d is somewhat separated from the rear end edge 11r, there is no particular problem even if the length of the contact member is increased.

  As described above, in the present embodiment, the card connector 1 includes the housing 11 that houses the card 101 including the contact pads 151, and the terminals 51 that are attached to the housing 11 and contact the contact pads 151 of the card 101. . At least one of the terminals 51 is disposed along the rear end edge 11 r of the housing 11, and at least a part of the terminal 51 is embedded in the bottom wall portion 11 b of the housing 11 and forms a hoop together with the base 52. A contact member 54, and the contact member 54 is connected to a pair of arms 54 c connected to the base 52, a junction 54 b that couples the pair of arms 54 c, and a tip of the junction 54 b. A contact portion a that contacts the contact pad 151;

  Accordingly, the card connector 1 can be provided with the contact portion 54a positioned at the tip of the contact member 54 at a position close to the rear end edge 11r of the housing 11 while keeping the spring length of the terminal 51 sufficiently long. Further, the card 101 having the contact pad 151 disposed on the rear end 111r side can be easily inserted and ejected, and the reliability can be increased. Furthermore, since the contact pressure is high, the contact between the contact portion 54a and the contact pad 151 is reliably maintained.

  Further, the contact member 54 has an M shape or a mountain shape in plan view. Thereby, the contact part 54a can be arrange | positioned in the position close | similar to the rear-end edge 11r of the housing 11, maintaining the length of each arm part 54c which exhibits springiness sufficiently long.

  Further, the joining portion 54b has a tip extending obliquely upward toward the front end edge 11f of the housing 11, and the contact portion 54a is located in the central opening 55a in the hoop in a plan view. As a result, the contact portion 54a can be elastically deformed in the vertical direction without being constrained by other members and without being interfered with.

  Further, each arm portion 54c includes an upper arm portion 54c2 extending from the base portion 52 toward the rear end edge 11r of the housing 11, a bent portion 54c3 having one end connected to the upper arm portion 54c2, and a bent portion 54c3. A forearm portion 54c4 connected to the end and extending toward the front end edge 11f of the housing 11, and the front end of the forearm portion 54c4 is joined at the junction 54b. As a result, the spring length of the arm portion 54c becomes sufficiently long, so that the amount of vertical displacement of the contact portion 54a connected to the tip of the merging portion 54b increases and the displacement of the contact pad 151 of the card 101 in the vertical direction. Can be followed over a wide range.

  Furthermore, each arm portion 54c has a constant width and thickness over its entire length, and functions as a cantilever-shaped leaf spring. Thereby, since it deforms uniformly over the entire length of the arm portion 54c and functions as a leaf spring, the amount of elastic displacement in the vertical direction of the contact portion 54a connected to the tip of the merging portion 54b increases, and the contact pad Contact with 151 can be maintained more reliably.

  Further, the housing 11 is provided along the rear end edge 11r, and includes a rear terminal holding recess 11c penetrating the bottom wall portion 11b. The terminal 51 provided along the rear end edge 11r of the housing 11 is provided as follows. The contact member 54 is held in the rear terminal holding recess 11c so as not to contact the bottom wall portion 11b. As a result, the arm portion 54c can be freely elastically displaced, and the contact portion 54a can be elastically displaced over a wide range in the vertical direction, so that the contact state of the inserted card 101 with the contact pad 151 is reached. Can be reliably maintained. Further, the rear terminal holding recess 11c can be formed so as to be close to the rear end edge 11r of the housing 11, and the terminal 51 can be disposed at a position close to the rear end edge 11r. Therefore, the distance from the rear edge 11r to the contact portion 54a can be shortened, and even if the distance from the rear end 111r of the card 101 to the contact pad 151 closer to the rear end 111r is short, the card 101 is inserted into the card 101. When inserted into the connector 1, the rear end 111r of the card 101 does not need to be inserted in front of the rear end edge 11r, so that the operability is improved.

  Next, a second embodiment of the present invention will be described. In addition, about the thing which has the same structure as 1st Embodiment, the description is abbreviate | omitted by providing the same code | symbol. The description of the same operation and the same effect as those of the first embodiment is also omitted.

  FIG. 10 is a first diagram illustrating a terminal according to the second embodiment of the present invention, and FIG. 11 is a second diagram illustrating a terminal according to the second embodiment of the present invention. 10, (a) is a diagram viewed from obliquely upward and rearward, (b) is a diagram viewed from diagonally forward and upward, and (c) is a diagram viewed from diagonally forward and downward, and in FIG. ) Is a top view, (b) is a side view in a state where no card is loaded, and (c) is a side view in a state where a card is loaded.

  As shown in FIGS. 10 and 11, the terminal 51 in the present embodiment does not include the frame member 56 that surrounds the periphery of the contact member 54. That is, the frame member 56 is omitted from the terminal 51 in the first embodiment.

  The configuration of other points in the terminal 51 is the same as that of the first embodiment, and the configuration of other points of the card connector 1 is also the same as that of the first embodiment. Therefore, the description is omitted.

  As described above, in the present embodiment, since the terminal 51 does not include the frame member 56, the rear end edge 11r of the housing 11 to the contact portion 54a of the terminal 51 is compared with the first embodiment. This distance can be further shortened by the frame member 56. Therefore, even when the distance from the rear end 111r of the card 101 to the contact pad 151 near the rear end 111r is short, when the card 101 is advanced to the overstroke position, the rear end 111r of the card 101 is moved backward. It is not necessary to insert larger in front of the end edge 11r, and it is possible to more reliably prevent a decrease in operability. The other effects are the same as those in the first embodiment, and a description thereof will be omitted.

  In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and does not exclude them from the scope of the present invention.

  The present invention can be applied to a card connector.

DESCRIPTION OF SYMBOLS 1 Card connector 11 Housing 11a Back wall part 11b Bottom wall part 11c Rear side terminal holding recessed part 11d Front side terminal holding recessed part 11e Side wall part 11f Front end edge 11g Energizing member accommodating part 11h Card guide mechanism accommodating part 11i Pin locking part 11j Incorrect Insertion prevention portion 11r Rear end edge 13 Holding projection 18 Insertion port 21 Slide cam portion 22 Cam groove 23 Slide member 23a Card holding portion 23b Side edge holding portion 23c Front end holding portion 51 Terminal 52 Base portion 52a Connection portion 53 Solder tail portion 54 Contact Member 54a Contact portion 54b Merging portion 54c Arm portion 54c1 Base portion 54c2 Upper arm portion 54c3 Bending portion 54c4 Forearm portion 55a Center opening portion 55b Peripheral opening portion 56 Frame member 71 Shell 72 Top plate portion 73 Hatch opening 74 Side plate portion 75 Pin holding member 81 Pin member 82 Biasing member 101 Card 111a Lower surface 111 Top surface 111c Notch portion 111f Front end 111r Rear end 112 Side edge 151 Contact pad 811 Frame 811b Bottom plate portion 811c First terminal holding portion 811d Second terminal holding portion 851 First terminals 851a and 861a Frame portions 851b and 861b Contact members 851d and 861d Tail Part 861 Second terminal

Claims (6)

(A) a housing for accommodating a card having a terminal member;
(B) having a connection terminal attached to the housing and in contact with the terminal member of the card;
(C) At least one of the connection terminals is disposed along a rear end edge of the housing, and a base part at least a part of which is embedded in the bottom wall part of the housing, and a contact that forms a hoop together with the base part With members,
(D) The contact member is connected to the pair of spring portions connected to the base portion, a merging portion that couples the pair of spring portions, and a contact that is connected to a tip of the merging portion and contacts the terminal member of the card. And a card connector. The card connector according to claim 1, wherein the contact member has an M shape or a mountain shape in a plan view. The card according to claim 1, wherein a leading end of the merging portion extends obliquely upward toward a front end edge of the housing, and the contact portion is located in an opening in the hoop in a plan view. Connector. Each spring portion includes a first portion extending from the base portion toward the rear end edge of the housing, a bent second portion having one end connected to the first portion, and the other end of the second portion. The card part according to any one of claims 1 to 3, further comprising a third part connected and extending toward a front end edge of the housing, wherein a tip of the third part is coupled at the joining part. connector. 5. The card connector according to claim 1, wherein each spring portion has a constant width and thickness over its entire length, and functions as a cantilever-like plate spring. The housing includes a terminal holding recess disposed along the rear end edge and penetrating the bottom wall.
The connection terminal arranged along the rear end edge of the housing is held in the terminal holding recess so that the contact member does not contact the bottom wall. The card connector as described in the item.

Images